EP1587674B1 - Composant leger multicouche absorbant les sons notamment destine a des vehicules - Google Patents
Composant leger multicouche absorbant les sons notamment destine a des vehicules Download PDFInfo
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- EP1587674B1 EP1587674B1 EP04765522A EP04765522A EP1587674B1 EP 1587674 B1 EP1587674 B1 EP 1587674B1 EP 04765522 A EP04765522 A EP 04765522A EP 04765522 A EP04765522 A EP 04765522A EP 1587674 B1 EP1587674 B1 EP 1587674B1
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- European Patent Office
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- layer
- range
- component according
- fleece
- weight per
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
- B32B5/18—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by features of a layer of foamed material
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
- B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
- B32B7/04—Interconnection of layers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
- B60N3/00—Arrangements or adaptations of other passenger fittings, not otherwise provided for
- B60N3/04—Arrangements or adaptations of other passenger fittings, not otherwise provided for of floor mats or carpets
- B60N3/048—Arrangements or adaptations of other passenger fittings, not otherwise provided for of floor mats or carpets characterised by their structure
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N7/00—Flexible sheet materials not otherwise provided for, e.g. textile threads, filaments, yarns or tow, glued on macromolecular material
- D06N7/0063—Floor covering on textile basis comprising a fibrous top layer being coated at the back with at least one polymer layer, e.g. carpets, rugs, synthetic turf
- D06N7/0071—Floor covering on textile basis comprising a fibrous top layer being coated at the back with at least one polymer layer, e.g. carpets, rugs, synthetic turf characterised by their backing, e.g. pre-coat, back coating, secondary backing, cushion backing
- D06N7/0081—Floor covering on textile basis comprising a fibrous top layer being coated at the back with at least one polymer layer, e.g. carpets, rugs, synthetic turf characterised by their backing, e.g. pre-coat, back coating, secondary backing, cushion backing with at least one extra fibrous layer at the backing, e.g. stabilizing fibrous layer, fibrous secondary backing
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N7/00—Flexible sheet materials not otherwise provided for, e.g. textile threads, filaments, yarns or tow, glued on macromolecular material
- D06N7/0063—Floor covering on textile basis comprising a fibrous top layer being coated at the back with at least one polymer layer, e.g. carpets, rugs, synthetic turf
- D06N7/0071—Floor covering on textile basis comprising a fibrous top layer being coated at the back with at least one polymer layer, e.g. carpets, rugs, synthetic turf characterised by their backing, e.g. pre-coat, back coating, secondary backing, cushion backing
- D06N7/0084—Floor covering on textile basis comprising a fibrous top layer being coated at the back with at least one polymer layer, e.g. carpets, rugs, synthetic turf characterised by their backing, e.g. pre-coat, back coating, secondary backing, cushion backing with at least one layer obtained by sintering or bonding granules together
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N7/00—Flexible sheet materials not otherwise provided for, e.g. textile threads, filaments, yarns or tow, glued on macromolecular material
- D06N7/0063—Floor covering on textile basis comprising a fibrous top layer being coated at the back with at least one polymer layer, e.g. carpets, rugs, synthetic turf
- D06N7/0071—Floor covering on textile basis comprising a fibrous top layer being coated at the back with at least one polymer layer, e.g. carpets, rugs, synthetic turf characterised by their backing, e.g. pre-coat, back coating, secondary backing, cushion backing
- D06N7/0086—Floor covering on textile basis comprising a fibrous top layer being coated at the back with at least one polymer layer, e.g. carpets, rugs, synthetic turf characterised by their backing, e.g. pre-coat, back coating, secondary backing, cushion backing characterised by the cushion backing, e.g. foamed polyurethane
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N2201/00—Chemical constitution of the fibres, threads or yarns
- D06N2201/02—Synthetic macromolecular fibres
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N2201/00—Chemical constitution of the fibres, threads or yarns
- D06N2201/02—Synthetic macromolecular fibres
- D06N2201/0254—Polyolefin fibres
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N2201/00—Chemical constitution of the fibres, threads or yarns
- D06N2201/04—Vegetal fibres
- D06N2201/042—Cellulose fibres, e.g. cotton
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N2203/00—Macromolecular materials of the coating layers
- D06N2203/06—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- D06N2203/068—Polyurethanes
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N2205/00—Condition, form or state of the materials
- D06N2205/04—Foam
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N2205/00—Condition, form or state of the materials
- D06N2205/10—Particulate form, e.g. powder, granule
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N2209/00—Properties of the materials
- D06N2209/02—Properties of the materials having acoustical properties
- D06N2209/025—Insulating, sound absorber
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N2209/00—Properties of the materials
- D06N2209/12—Permeability or impermeability properties
- D06N2209/121—Permeability to gases, adsorption
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N2211/00—Specially adapted uses
- D06N2211/12—Decorative or sun protection articles
- D06N2211/26—Vehicles, transportation
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N2213/00—Others characteristics
- D06N2213/04—Perforated layer
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N2213/00—Others characteristics
- D06N2213/06—Characteristics of the backing in carpets, rugs, synthetic lawn
- D06N2213/061—Non-continuous back coating or pre-coat
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/13—Hollow or container type article [e.g., tube, vase, etc.]
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
- Y10T442/60—Nonwoven fabric [i.e., nonwoven strand or fiber material]
Definitions
- the invention relates to a multilayer, sound-absorbing lightweight component, in particular for motor vehicles, with an air-permeable cover layer and at least one air-permeable nonwoven layer of thermoplastic fibers, wherein the cover layer is sound-permeable coupled with the nonwoven layer.
- resonance absorbers are used for sound insulation in passenger cars.
- These are selective spring-mass systems, which are to be excited to resonance and whose optimal effect is in the respective resonance range.
- Elastic nonwoven materials and / or foams which are coupled to a heavy layer of rubber or an elastomer as a mass, usually serve as the spring.
- Conventional spring-mass systems have only a narrowband effect.
- This known floor covering consists essentially of a carpet layer, a sound insulation arranged underneath and a soft polyurethane foam layer, wherein the sound insulation is formed of a two-layer fleece, namely a polyester non-woven and a polypropylene non-woven arranged underneath.
- the two-ply fleece has a Basis weight of 600 to 1,000 g / m 2 .
- the carpet layer is a polyamide tufted velor carpet and consists of a polyamide staple fiber layer, a carrier fleece and an integration.
- the two-ply fleece is sintered over the entire surface of the back of the carpet layer by a polyethylene sintered layer.
- a polyethylene / polyamide sealing film is laminated, which seals the Zweilagenvlies against Schaum prepare for foam.
- the present invention has for its object to provide a component of the type mentioned, which is relatively light and at the same time has a high or even improved acoustic efficiency.
- the sound-absorbing component according to the invention has an air-permeable cover layer and at least one air-permeable nonwoven layer of thermoplastic fibers, wherein the cover layer is sound-permeable coupled to the nonwoven layer.
- the component is substantially further characterized in that the nonwoven layer has a thickness in the range of 2 to 7 mm at a basis weight in the range of 500 to 1500 g / m 2 and not or only partially with the surface layer with an area ratio of less than 20 % of its surface facing the cover layer is connected.
- the component according to the invention is very light in comparison to conventional sound-insulating panels, which form a spring-mass system with an airtight heavy layer.
- the nonwoven layer is not or only partially connected to the cover layer.
- the cover layer As a result of this essentially loose stratification, at least in places one or more thin layers of air result between the layers.
- At the transitions of the layers to the air layers there are corresponding density differences and, accordingly, relatively high impedance jumps, which give the lightweight component according to the invention excellent acoustic effectiveness.
- Measurements have shown that components according to the invention, despite their low total surface mass and good in special Embodiments even have improved sound insulation properties than conventional heavy-layer components.
- Measurements have shown, in particular, that components according to the invention have a relatively high sound-absorbing and sound-damping effect at medium and high sound frequencies.
- the sound-absorbing and sound-insulating nonwoven layer of the component according to the invention is preferably formed from polyethylene terephthalate fibers and / or polypropylene fibers.
- the air permeability or the flow resistance of the nonwoven layer is adjusted by pressing so that there is an optimum of sound-absorbing and sound-absorbing effect.
- the thickness of the nonwoven layer is preferably in the range of 2 to 5 mm at a basis weight in the range of 500 to 1300 g / m 2 .
- An advantageous embodiment of the lightweight component according to the invention is that on the side facing away from the cover layer of the nonwoven layer, a further air-permeable nonwoven layer of thermoplastic fibers is disposed, both nonwoven layers each having a thickness in the range of 2 to 5 mm and a respective basis weight in the range of 500 to 700 g / m 2 .
- the two nonwoven layers can have the same thickness and the same basis weight, for example, a basis weight of 600 g / m 2 and a thickness of about 3 mm.
- the two nonwoven layers are also preferably substantially loosely adjacent to one another, so that their mutually facing layer boundaries delimit a thin air layer or there is a density difference and a corresponding impedance discontinuity there.
- spacers are formed in the at least one nonwoven layer of thermoplastic fibers.
- the spacers cause thin air-filled cavities between the nonwoven layer and the adjacent layer or an adjacent metal sheet. This embodiment is acoustically particularly effective because of the impedance jump present at the transition between the nonwoven layer and the air layer.
- a relatively high sound absorption can be achieved with the lightweight component according to the invention if between the cover layer and the nonwoven layer an open-cell foam layer is arranged, which at a basis weight in the range of preferably only 100 to 200 g / m 2 has a thickness in the range of 7 to 15 mm having.
- the foam layer may in particular consist of polyurethane foam or melamine resin foam.
- the cover layer of the lightweight component according to the invention may be formed by a polyester fiber fleece having a basis weight in the range from 70 to 110 g / m 2 or a spunbonded nonwoven having a basis weight in the range from 60 to 100 g / m 2 .
- a particularly high sound absorption coefficient has been achieved with a design in which a polyester fiber fleece with a basis weight in the range of 70 to 110 g / m 2 is arranged directly behind the spunbonded nonwoven.
- the flow resistance of the spunbonded web is preferably greater than that of the polyester fiber web.
- the lightweight component according to the invention can be used in a motor vehicle, in particular as a motor-side end wall paneling. Alternatively or additionally, it can also be used to cover the front wall side facing the passenger compartment, its cover layer then preferably being formed by a carpet layer.
- the carpet layer consists of a Tuftteppich having an acoustically open Tuftmoi and an air-permeable, net-like Tufteinitati.
- a further advantageous embodiment consists in the fact that the Tufteinitati is provided with mineral microbodies and / or mineral micro hollow bodies.
- Fig. 1 shows a portion of a designated for a motor vehicle carpet structure 1, which is a lightweight component compared to conventional motor vehicle carpet floor structures, which have a kind of spring-mass system serving as a sound-absorbing mass heavy layer.
- the carpet structure 1 according to the invention is formed from a tufted velor carpet layer. 3 with a tuft carrier is referred to, in which the pile threads 4 and 5 Polnoppen are retracted.
- the Tuftuci 3 consists of a nonwoven fabric, for example, a polyester spunbonded fabric. It can be seen that the tuft carrier 3 has a plurality of pinholes 6 defining perforations 7 which were produced by polypeless tufting needles.
- the pile naps 6 increase the acoustically effective volume of air in the velor carpet layer 2.
- the velor carpet layer 2 Based on their total area, the velor carpet layer 2 has a substantially homogeneous pile nib density.
- a first adhesive 8 was first applied to its underside, which essentially attaches itself to the tufts 5 during application and leaves the perforations 7 produced by the tweezers without needles substantially free.
- Tufteinitati another powder adhesive 9 is sintered.
- the first adhesive 8 and / or the sintered powder adhesive 9 preferably contain mineral microbodies and / or mineral micro hollow bodies (not shown).
- the carpet layer 2 has a basis weight in the range of 200 to 400 g / m 2 , for example 350 g / m 2 .
- the carpet layer 2 is followed by an air-permeable nonwoven layer 10 formed from thermoplastic fibers.
- the flow resistance of the nonwoven layer which is preferably formed from PET fibers and / or PP fibers, is set or optimized by compression.
- the thickness of the nonwoven layer 10 is at a basis weight in the range of 500 to 1300 g / m 2 in the range of 2 to 7 mm, in particular in the range of 2 to 5 mm at a basis weight in the range of about 600 to about 1,000 g / m 2 ,
- the nonwoven layer 10 is not or only partially connected to the carpet layer 2.
- the partial connection is optionally carried out by welding and is limited to an edge region and optionally to the edge region of one or more openings, which serve to carry out cables, hose lines and / or mechanical operating elements.
- the areal proportion of the nonwoven layer 10 which is materially bonded to the carpet layer 2 is at most 20%, but preferably substantially less than 20%, of its surface facing the carpet layer 2.
- the cotton fiber fleece 11 has a basis weight in the range of about 600 to 1100 g / m 2 , in particular in the range of about 700 to 1000 g / m 2 . At a basis weight in the range of about 600 to 700 g / m 2 , its thickness is about 6 mm. At a basis weight in the range of 1,000 to 1,100 g / m 2 , however, the cotton fiber fleece is about 15 to 20 mm thick.
- the nonwoven layer 10 rests essentially loosely on the cotton fiber fleece 11, so that thin air layers or air chambers 13 are present between the two layers 10, 11.
- the two layers 10, 11 are not or only partially connected to each other, wherein the compound is optionally arranged in the edge region of the light component formed by the layers 2, 10 and 11 and / or in the edge region formed therein openings (not shown).
- a further inventive motor vehicle carpet structure 1 ' is shown, which largely corresponds to the carpet structure according to Fig. 1 equivalent. It differs from the carpet construction according to Fig. 1 in that, instead of a cotton fiber fleece, an essentially foam layer 11 'is arranged below the fleece layer 10. Also in this carpet construction, the layers 2, 10 and 11 'lie substantially loosely on each other. In the nonwoven layer 10 also depressions or elevations 14 may be embossed, which contribute to the formation of thin air chambers 13.
- the foam layer 11 ' is preferably made of open-cell flexible polyurethane foam, in particular cold foam.
- the foam layer 11 ' has a thickness in the range of about 15 to 22 mm at a basis weight in the range of about 900 to 1300 g / m 2 .
- FIGS. 3 to 8 sections of engine-side end wall panels are shown, which are also each designed as a lightweight component.
- 12 ' is a front wall sheet called.
- the inside of the end wall panel 12 ' is at least partially with a carpet structure 1 or 1' according to Fig. 1 respectively.
- Fig. 2 disguised (in the FIGS. 3 to 8 not shown).
- end wall panels each have an air-permeable nonwoven layer 10 which rests substantially loosely on the end wall 12 'and is made of thermoplastic fibers, preferably made of PET fibers and / or polypropylene fibers.
- the flow resistance of the nonwoven layer 10 has in turn been adjusted by the degree of compaction of the nonwoven fabric.
- the nonwoven layer 10 has a basis weight in the range of about 500 and up to 1100 g / m 2 has a thickness in the range of about 2 to 5 mm, for example about 3 mm.
- the nonwoven layer 10 is covered with an open-cell foam layer 15.
- Foam is, for example, polyurethane foam or melamine resin foam.
- the foam layer 15 has a basis weight in the range of about 100 to 200 g / m 2 and a thickness in the range of about 7 to 15 mm, for example about 9 mm.
- the end wall cladding has a relatively thin, air-permeable nonwoven layer 16 as a cover layer.
- the cover layer consists of a polyester fiber fleece 16 which has a basis weight in the range of about 70 to 110 g / m 2 .
- the thickness of the polyester fiber fleece 16 is less than 1 mm, preferably less than 0.8 mm.
- the cover layer consists of a thin spunbonded nonwoven 17, wherein immediately behind the spunbonded nonwoven 17 a polyester nonwoven fabric 16 according to FIG Fig. 3 is arranged.
- the spunbonded fabric 17 has a basis weight in the range of 60 to 100 g / m 2 , for example about 80 g / m 2 , and has a higher flow resistance than the polyester fiber fleece 16.
- FIGS. 5 and 6 Portions shown inventive end wall panels differ from those in the FIGS. 3 and 4 shown embodiments in that on the side facing away from the cover layer of the nonwoven layer 10, a further air-permeable nonwoven layer 10 'is disposed of thermoplastic fibers. Both nonwoven layers 10, 10 'each have a thickness in the range of 2 to 5 mm and each have a basis weight in the range of 500 to 700 g / m 2 .
- Spacers 18 may also be formed, in particular pronounced, in the nonwoven layer 10 "in order to create defined thin air chambers 19, 19 'between the layers 10", 15 or between the nonwoven layer 10 "and the end wall plate 12'.
- the layers 10, 10 ', 10 ", 15, 16 and optionally 17 of the end wall lining according to the FIGS. 3 to 8 each lie loosely on each other so that thin air layers are formed between the layers.
- the layers 10, 10 ', 10 ", 15, 16, 17 are only point or in places on the end wall plate 12 'fixed.
- the front wall panel 12 'existing openings eg for cables of a heating and air conditioning, electrical cables, Bowden cables, linkage, levers or the steering shaft, through the flexible, adaptive layers 10, 10', 10 ", 15, 16 , 17 of the lightweight component according to the invention acoustically sealed.
- Fig. 9 shows comparative measurements of the sound insulation as a function of frequency for an air-permeable nonwoven layer used in a lightweight component according to the invention without and with an air-permeable spunbonded nonwoven covering layer with respect to a 0.8 mm thick steel sheet and a heavy layer having a basis weight of about 3.25 kg / m 2
- the measuring curve M1 shows the sound insulation that results for the steel sheet. It can be seen that the sound insulation is generally greater at higher sound frequencies.
- the measuring curve M2 represents the measured values for the heavy layer. Due to resonance influences, the sound insulation of the heavy layer in a frequency range of about 700 to 2,500 Hz was below the sound insulation effect of the bare steel sheet.
- the measurement curve M3 represents the measured values for a nonwoven layer compressed to about 3 mm thickness and having a basis weight of about 600 g / m 2 . It is surprising that the sound insulation achieved with this air-permeable nonwoven layer is relatively high in comparison to the heavy layer.
- the dashed measurement curve M4 shows the measured values for a corresponding nonwoven layer, which was additionally coated on the sound side with a spunbonded nonwoven having a weight per unit area of about 80 g / m 2 .
- Fig. 10 shows the sound absorption as a function of frequency for various inventive lightweight, as Stirnwandveritate lightweight components compared to two suitable as end wall cladding layer structures, each having a heavy layer having a basis weight of about 3.2 kg / m 2 .
- the curve K1 reproduces the measured values for a layer structure which consisted of an air-tight heavy layer with 3.2 kg / m 2 , an approximately 9 mm thick open-cell PUR foam layer and an air-permeable PES nonwoven.
- the dashed curve K2 relates to a corresponding layer structure, which, however, additionally has a spunbonded nonwoven on the PES nonwoven with a weight per unit area of about 80 g / m 2 as cover layer.
- the curve K3 corresponds to the absorption measurement in a layer structure according to the invention, in which instead of the mentioned heavy layer, a pressed, air-permeable nonwoven layer was used, which has a basis weight of only about 600 g / m 2 at a thickness of about 3 mm.
- the curve K4 indicated by triangles relates to a similar layer structure in which the weight per unit area of the pressed, air-permeable nonwoven layer is about 1000 g / m 2 .
- the curves K5 and K6 relate to layer structures according to the invention, which in turn have a pressed, air-permeable nonwoven layer, an approximately 9 mm thick open-cell PUR foam layer and a relatively thin air-permeable PES nonwoven layer.
- the layer structure associated with the curve K5 furthermore comprises a thin spunbonded nonwoven having a weight per unit area of about 80 g / m 2 as a cover layer, wherein the pressed, air-permeable nonwoven layer has a basis weight of about 600 g / m 2 at a thickness of about 3 mm
- the curve K6 belongs to a corresponding layer structure, which likewise has as a cover layer a thin spunbonded nonwoven having a weight per unit area of about 80 g / m 2 , wherein the basis weight of the approx. 3 mm thick, pressed, air-permeable nonwoven layer in this layer structure, however, is about 1,000 g / m 2 .
- the curves K7 and K8 relate to layer structures which differ from the layer structures underlying the curves K3 and K5 in that a further corresponding nonwoven layer is arranged on the side of the pressed, air-permeable nonwoven layer facing away from the cover layer, ie both nonwoven layers lying loosely on one another each having a thickness of about 3 mm and each having a basis weight of about 600 g / m 2 .
- the curve K8 belongs to the layer structure, which has as a cover layer a thin spunbonded nonwoven with a basis weight of about 80 g / m 2 .
- the curve V10 belongs to a carpet construction which is formed from a carpet upper product with a heavy-layer back and a cold foam layer arranged underneath, the cold foam layer having a basis weight of about 1,200 g / m 2 .
- the measurement curve V9 is based on a carpet construction which comprises a corresponding cold foam layer but has a different carpet upper product with a film backing.
- the measurement results for a carpet construction which is formed from a carpet backing with heavy-layer back, a subsequent nonwoven layer with a basis weight of 1,000 g / m 2 and a subsequent cotton fiber fleece with a basis weight of 700 g / m 2 , shows the curve V1.
- Curve V2 reproduces the measurement results for a carpet structure which likewise has a nonwoven layer with a weight per unit area of 1000 g / m 2 and as underlayer a cotton fiber fleece with a weight per unit area of 700 g / m 2 , but the other carpet fabric with film backing.
- the curves V3 to V8 each relate to carpeting structures, the upper fabric an acoustically open velor carpet layer according to Figures 1 and 2 having a basis weight of about 350 g / m 2 and an air-permeable, about 3 mm thick, pressed nonwoven layer having a basis weight of about 1,000 g / m 2 .
- the carpet structures belonging to the curves V3 and V4 further each comprise a cotton fiber fleece with a basis weight of about 700 g / m 2 as the lowest layer.
- the lowest layer is a cotton fiber fleece with a weight per unit area of about 1,000 g / m 2
- the carpet bases on which the curves V7 and V8 are based are each the lowest layer a cold foam having a basis weight of about 1,200 g / m 2 has been used.
- the measured carpet floor structures finally differ in that at the underlying the curves V4, V6 and V8 Carpet structures each between the carpet upper and about 3 mm thick, air-permeable nonwoven layer is disposed about 40 microns thick plastic film.
- the comparison of the curves V4, V6 and V8 with the curves V3, V5 and V7 shows that the carpet systems equipped with the plastic film have a significantly lower sound absorption coefficient at higher frequencies than the carpet construction according to the invention without plastic film.
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Laminated Bodies (AREA)
- Soundproofing, Sound Blocking, And Sound Damping (AREA)
- Vehicle Interior And Exterior Ornaments, Soundproofing, And Insulation (AREA)
- Nonwoven Fabrics (AREA)
- Carpets (AREA)
- Transition And Organic Metals Composition Catalysts For Addition Polymerization (AREA)
- Passenger Equipment (AREA)
Claims (18)
- Elément multicouches à absorption acoustique, en particulier pour véhicules automobiles, avec une couche de recouvrement (2, 16, 17) perméable à l'air et au moins une couche de non-tissé (10, 10', 10") perméable à l'air, en fibres thermoplastiques, la couche de recouvrement (2, 16, 17) étant couplée, de manière perméable aux sons, avec la couche de non-tissé (10, 10', 10"), caractérisé en ce que la couche de non-tissé (10, 10', 10") présente une épaisseur de l'ordre de 2 à 7 mm pour un grammage de l'ordre de 500 à 1.500 g/m2, et n'est pas reliée à la couche de recouvrement (2, 16, 17) ou seulement partiellement avec un partie de moins de 20% de sa surface orientée vers la couche de recouvrement (2, 16, 17).
- Elément selon la revendication 1, caractérisé en ce que la couche de non-tissé (10, 10', 10" ) présente une épaisseur de l'ordre de 2 à 5 mm pour un grammage de l'ordre de 500 à 1.300 g/m2.
- Elément selon revendication 1 ou 2, caractérisé en ce que la couche de non-tissé (10, 10', 10") est réalisée en fibres de polytéréphtalate d'éthylène et / ou en fibres de polypropylène.
- Elément selon l'une des revendications 1 à 3, caractérisé en ce que la couche de recouvrement (2, 16, 17) et la couche de non tissé (10, 10', 10") ne sont reliées ensemble que dans une zone marginale de la couche de non-tissé et / ou dans une zone marginale d'un à jour, pratiqué dans la couche de recouvrement (2, 16, 17) ainsi que dans la couche de non-tissé (10, 10', 10").
- Elément selon l'une des revendications 1 à 4, caractérisé en ce que, sur la face de la couche de non-tissé (10), opposée à la couche de recouvrement (2, 16, 17), est disposée une autre couche de non-tissé (10') en fibres thermoplastiques perméable à l'air, les deux couche de non-tissé (10, 10') présentant chacune une épaisseur de l'ordre de 2 à 5 mm et un grammage respectif de l'ordre de 500 à 700 g/m2.
- Elément selon l'une des revendications 1 à 5, caractérisé en ce que, entre la couche de recouvrement (16, 17) et la couche de non-tissé (10, 10") en fibres thermoplastiques, est disposée une couche de mousse synthétique (15) à alvéoles ouvertes.
- Elément selon la revendication 6, caractérisé en ce que la couche de mousse synthétique (15) présente une épaisseur de l'ordre de 7 à 15 mm pour un grammage de l'ordre de 100 à 200 g/m2.
- Elément selon revendication 6 ou 7, caractérisé en ce que la couche de mousse synthétique (15) consiste en une mousse de polyuréthane ou en une mousse de résine de mélamine.
- Elément selon l'une des revendications 1 à 8, caractérisé en ce que la couche de recouvrement est formée par une nappe de fibres de polyester (16) avec un grammage de l'ordre de 70 à 110 g/m2 ou par une nappe de monofils désorientés (17) avec un grammage de l'ordre de 60 à 100 g/m2 .
- Elément selon la revendication 9, caractérisé en ce que, directement derrière le nappe de monofils désorientés (17) est disposé une nappe de fibres de polyester (16) avec un grammage de l'ordre de 70 à 110 g/m2.
- Elément selon l'une des revendications 1 à 8, caractérisé en ce que la couche de recouvrement est formée par une couche formant tapis (2).
- Elément selon la revendication 11, caractérisé en ce que la couche formant tapis (2) est formée par un tapis tufté, qui présente un support tufté (3), perméable aux sons et une armure réticulée, perméable à l'air.
- Elément selon la revendication 12, caractérisé en ce que l'armure du tufté est pourvue de microcorps minéraux et / ou de microcorps minéraux creux.
- Elément selon l'une des revendications 11 à 13, caractérisé en ce que la couche formant tapis (2) présente un grammage de l'ordre de 200 à 400 g/m2
- Elément selon l'une des revendications 1 à 14, caractérisé en ce que, sur la face de la couche de non-tissé (10), opposée à la couche de recouvrement (2), est disposée une couche de mousse synthétique (11') à alvéoles ouvertes ou une couche (11) formée par une nappe de fibres de coton.
- Elément selon la revendication 15, caractérisé en ce que la nappe de fibres de coton (11) présente une épaisseur de l'ordre de 5 à 20 mm pour un grammage de l'ordre de 600 à 1.100 g/m2
- Elément selon la revendication 15, caractérisé en ce que la couche de mousse synthétique (11') présente une épaisseur de l'ordre de 15 à 22 mm pour un grammage de l'ordre de 900 à 1.300 g/m2
- Elément selon l'une des revendications 1 à 17, caractérisé en ce que, dans la couche de non-tissé (10', 10") en fibres thermoplastiques, sont formés des élévations (14) ou des écartements (18).
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE20320102U DE20320102U1 (de) | 2003-12-23 | 2003-12-23 | Mehrschichtiges, schallabsorbierendes Leichtbauteil, insbesondere für Kraftfahrzeuge |
DE20320102U | 2003-12-23 | ||
PCT/EP2004/010662 WO2005065933A1 (fr) | 2003-12-23 | 2004-09-23 | Composant leger multicouche absorbant les sons notamment destine a des vehicules |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1587674A1 EP1587674A1 (fr) | 2005-10-26 |
EP1587674B1 true EP1587674B1 (fr) | 2008-12-17 |
Family
ID=34585334
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP04765522A Not-in-force EP1587674B1 (fr) | 2003-12-23 | 2004-09-23 | Composant leger multicouche absorbant les sons notamment destine a des vehicules |
Country Status (8)
Country | Link |
---|---|
US (1) | US20060159883A1 (fr) |
EP (1) | EP1587674B1 (fr) |
JP (1) | JP2007515339A (fr) |
CN (1) | CN1717319A (fr) |
AT (1) | ATE417729T1 (fr) |
DE (2) | DE20320102U1 (fr) |
MX (1) | MXPA05009249A (fr) |
WO (1) | WO2005065933A1 (fr) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
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DE102022125158A1 (de) | 2022-09-29 | 2024-04-04 | Bayerische Motoren Werke Aktiengesellschaft | Schalldämmungselement für ein Kraftfahrzeug sowie Kraftfahrzeug |
Families Citing this family (22)
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US20050183727A1 (en) * | 2004-02-23 | 2005-08-25 | Chou Su J. | Mask having anti-virus and anti-germ effect |
CN100354123C (zh) * | 2005-12-29 | 2007-12-12 | 上海汽车地毯总厂 | 汽车内饰用复合材料及其制造方法 |
FR2906072A1 (fr) * | 2006-09-19 | 2008-03-21 | Afitex Sa | Produit textile d'isolation acoustique, resistant aux rayons ultra-violets |
JP2008162399A (ja) * | 2006-12-28 | 2008-07-17 | Hiraoka & Co Ltd | 吸音性置き敷きカーマット |
US20080233337A1 (en) * | 2007-03-23 | 2008-09-25 | International Automotive Components Group North America, Inc. | Floor covering for liquid dispersion |
DE102009020996A1 (de) * | 2009-05-12 | 2010-11-18 | Aksys Gmbh | Luftschall isolierender Materialaufbau |
CN102529840B (zh) * | 2010-12-23 | 2014-05-14 | 上海新安汽车隔音毡有限公司 | 一种多层结构的汽车用隔音垫及其制造方法 |
WO2012147422A1 (fr) * | 2011-04-27 | 2012-11-01 | 株式会社イノアックコーポレーション | Tapis et procédé de fabrication de celui-ci |
DE102011078935A1 (de) | 2011-07-11 | 2013-01-17 | Bayerische Motoren Werke Aktiengesellschaft | Hochabsorptives Schallisolationsbauteil, insbesondere für den Kraftfahrzeuginnenraum |
JP5684687B2 (ja) * | 2011-10-04 | 2015-03-18 | ダイハツ工業株式会社 | 天井材 |
US9027706B2 (en) * | 2013-02-11 | 2015-05-12 | Federal-Mogul Powertrain, Inc. | Enhanced, lightweight acoustic scrim barrier |
EP3092336A1 (fr) * | 2014-01-10 | 2016-11-16 | DSM IP Assets B.V. | Produit textile et ses utilisations, procédé de production d'un tel produit et procédé de recyclage du produit |
DE102014201340A1 (de) * | 2014-01-24 | 2015-07-30 | Volkswagen Aktiengesellschaft | Schallschutzelement, Kraftfahrzeug |
CN104175931B (zh) * | 2014-07-24 | 2017-04-12 | 江苏中联地毯有限公司 | 汽车内饰地毯及其制造方法 |
EP3012155A1 (fr) * | 2014-10-20 | 2016-04-27 | Autoneum Management AG | Partie de plancher principal destiné à un petit véhicule utilitaire |
CN107208342A (zh) * | 2015-01-09 | 2017-09-26 | 帝斯曼知识产权资产管理有限公司 | 制造纺织产品的方法、该纺织产品的用途以及应用该方法的设备 |
CN104943589B (zh) * | 2015-06-23 | 2018-06-01 | 江门庆宇汽车内装配件有限公司 | 一种具有高吸音性能的车用地毯及制备方法 |
CN107962847B (zh) * | 2016-10-19 | 2020-06-26 | 泽费罗斯股份有限公司 | 声学吸收体复合隔板组件 |
ES2761887T3 (es) * | 2017-03-17 | 2020-05-21 | Freudenberg Carl Kg | Material compuesto textil absorbente acústico |
JP2018197527A (ja) * | 2017-05-24 | 2018-12-13 | トヨタ紡織株式会社 | 内燃機関の吸気通路構成部材 |
DE102018202771A1 (de) * | 2018-02-23 | 2019-08-29 | Bayerische Motoren Werke Aktiengesellschaft | Verdeckelement und Verdeck für ein Cabriolet-Fahrzeug und Cabriolet-Fahrzeug |
CN108973815A (zh) * | 2018-07-20 | 2018-12-11 | 无锡吉兴汽车部件有限公司 | 一种复合纤维汽车地毯及其生产方法 |
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US3926700A (en) * | 1969-11-20 | 1975-12-16 | Gen Latex And Chemical Corp | Cellular-urethane backed carpet |
DE3430775C2 (de) * | 1984-08-21 | 1993-01-28 | Dr. Alois Stankiewicz GmbH, 3101 Adelheidsdorf | Teppichteil, Verfahren zu seiner Herstellung und seine Verwendung |
US4741945A (en) * | 1986-07-30 | 1988-05-03 | Arco Chemical Company | Automotive trim panel |
DE3809980C2 (de) * | 1988-03-24 | 1998-02-19 | Stankiewicz Gmbh | Aufbau zur Schallisolation, Verfahren zu seiner Herstellung und seine Verwendung |
DE8812664U1 (de) * | 1988-10-08 | 1988-11-24 | Johann Borgers Gmbh & Co Kg, 4290 Bocholt | Wasserfestes, textiles Schichtstoffteil für Automobile, wie Kofferraummatte, Bodenformteil etc. |
DE3905607A1 (de) * | 1989-02-23 | 1990-08-30 | Bayerische Motoren Werke Ag | Schichtaufbau zur herstellung von schallisolierungenm schallisolierungen und verfahren zur herstellung des schichtaufbaus bzw. der schallisolierungen |
CH681973A5 (fr) * | 1990-07-19 | 1993-06-30 | Matec Holding | |
CH684398A5 (de) * | 1991-04-26 | 1994-09-15 | Matec Holding Ag | Formstabiles Verbundteil. |
DE29619592U1 (de) * | 1996-11-12 | 1997-01-02 | Hp-Chemie Pelzer Research And Development Ltd., Waterford | Wiederverwertbares Teppichbodenformteil |
DE19812925A1 (de) * | 1998-03-24 | 1999-09-30 | Asota Gmbh | Dreidimensionale, formstabile Formteile auf Basis von strukturierten Nadelvliesen |
US6204209B1 (en) * | 1998-04-10 | 2001-03-20 | Johnson Controls Technology Company | Acoustical composite headliner |
US6821597B1 (en) * | 1999-03-10 | 2004-11-23 | Magee Rieter Automotive Systems | Method for manufacturing a sound insulating structure and the structure produced thereby |
CA2280424A1 (fr) * | 1999-08-17 | 2001-02-17 | Soleno Textiles Techniques Inc. | Membrane composite et usage de celle-ci pour attenuer les bruits |
DE19960945B4 (de) * | 1999-12-17 | 2004-07-08 | Audi Ag | Bodenverkleidung für Kraftfahrzeuge |
-
2003
- 2003-12-23 DE DE20320102U patent/DE20320102U1/de not_active Expired - Lifetime
-
2004
- 2004-09-23 WO PCT/EP2004/010662 patent/WO2005065933A1/fr active Application Filing
- 2004-09-23 EP EP04765522A patent/EP1587674B1/fr not_active Not-in-force
- 2004-09-23 JP JP2006545932A patent/JP2007515339A/ja active Pending
- 2004-09-23 MX MXPA05009249A patent/MXPA05009249A/es unknown
- 2004-09-23 CN CNA2004800010864A patent/CN1717319A/zh active Pending
- 2004-09-23 US US10/547,877 patent/US20060159883A1/en not_active Abandoned
- 2004-09-23 DE DE200450008684 patent/DE502004008684D1/de not_active Expired - Fee Related
- 2004-09-23 AT AT04765522T patent/ATE417729T1/de not_active IP Right Cessation
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102022125158A1 (de) | 2022-09-29 | 2024-04-04 | Bayerische Motoren Werke Aktiengesellschaft | Schalldämmungselement für ein Kraftfahrzeug sowie Kraftfahrzeug |
Also Published As
Publication number | Publication date |
---|---|
EP1587674A1 (fr) | 2005-10-26 |
MXPA05009249A (es) | 2005-10-19 |
ATE417729T1 (de) | 2009-01-15 |
CN1717319A (zh) | 2006-01-04 |
JP2007515339A (ja) | 2007-06-14 |
DE502004008684D1 (de) | 2009-01-29 |
DE20320102U1 (de) | 2005-05-12 |
US20060159883A1 (en) | 2006-07-20 |
WO2005065933A1 (fr) | 2005-07-21 |
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